Knowing and understanding how the human body functions will help a prospective applicant secure and succeed in a position in the health care field in two ways. Not every position in the health care industry requires knowledge of human anatomy. Bookkeeping, maintentance and operation of information technology systems, inventory control and other support positions do not necessarily require knowledge of the human body. Most other positions more directly related to the provision of care, however, absolutely require such knowledge.
The first way in which knowlege of human anatomy and biology are important involves the simple application of common sense: how can an individual be useful within a medical facility if he or she does not understand the basic function of the facility. All forms of communication, including oral and written, entail knowledge of the special vocabulary used by health care professionals, and the ability to understand and respond on a moment's notice is essential. That vocabulary is directly related to the condition of individual patients, and the provision of care requires a system of individuals who are all on the "same sheet of paper," as it were. It is impossible to regularly help patients without some knowledge of their condition, which involves knowledge of the human body, and how each system within the body relates to each other.
The second way in which knowledge of human anatomy and biology are important is emotional. Even the staff responsible for processing patients into a medical facility need to understand the basics of health care. Such people must understand what the newly-arrived patient is there for, and whether the symptons and conditions described and visible warrant emergency attention. The ability to project authority and knowledge under such circumstances requires knowledge of the human body and understanding of what the available information means. Only by understanding how the circulatory, respiratory, neurological, renal and other systems function and relate to each other can a medical provider put the patients at ease and confident that they are receiving the proper care.